Mark Shuttleworth today urged development of Linux models to rival what Apple has done on the desktop and mobile devices. Certainly on the desktop experience, we need to shoot beyond the Mac, but I think it's equally relevant [in] the mobile space, Shuttleworth said, outlining the challenge as figuring out how to deliver a 'crisp and clean' experience, without sacrificing the community process. Key to this will be services-based mechanisms for creating revenue for free software that go beyond advertising, Shuttleworth said, adding that cadence in free software releases spurs innovation, and that a regular release schedule, as well as meaningful ties to Windows, will be essential to fulfilling the vision.